/Engine/Source/Runtime/Engine/Public/Streaming/TextureMipDataProvider.h
Get the next tick state and thread for the mip allocator. Used by FTextureStreamIn to schedule correctly the update between FTextureMipAllocator andFTextureMipDataProvider.
[ETickState](API\Runtime\Engine\Streaming\FTextureMipDataProvider\ETickState) GetNextTickState() const